Romp/Sister Toddler/Nice/Okay/Both
As he speaks, dad rolls over onto his back and holds his arms ot. You carry your sister over and put her on his chest. "Hello Princess, have you been playing with your big brother," he says in a silly voice.
"Come round to my side," Mom says. She is on her back as well, and the covers are pushed down far enough that you can see her boobs.
You hand your sister to your dad and her lays her on his bare chest. Then you walk round to mom's side and she holds the covers up so you can get in beside her. She grabs you and rolls you over on top of her so that your face is right between her boobs. You look across at dad and he is lifting your sister up and kissing her.